VAT Deduction Denied for Fake Invoices in Turkey 2026: How the Assessment Is Calculated — VAT Law Arts. 8(2), 29 and 34, Carried-Forward VAT, One-Times and Threefold Tax Loss Penalties, Late-Payment Interest, Corporate Tax Disallowance, Provisional Tax and Council of State Case Law

When the Turkish tax administration treats a supplier’s invoice as fake, the first and largest item in the resulting assessment is the denial of the VAT deduction. A company may deduct VAT shown on invoices for supplies made to it, if the purchase relates to its business, the VAT is shown separately and the invoice is recorded in the statutory books by the end of the calendar year following the year of the supply (VAT Law No. 3065, Arts. 29(1)(a), 29(3) and 34(1)). If the invoice is held to be fake, the deduction is denied. Where VAT becomes payable in the period concerned, that VAT is assessed. Where the company had VAT carried forward, the carried-forward balance is reduced first. Tax is then assessed for whichever later periods show VAT payable once the return table is recalculated. The tax loss penalty is three times the tax if the loss was caused by the acts in Tax Procedure Law (TPL) Art. 359, and one times otherwise (TPL Art. 344). Late-payment interest runs on the tax from its normal due date (TPL Art. 112(3)). If the same invoices are also disallowed as costs, corporate tax and provisional tax are assessed as well. On 28 January 2026 the Council of State’s Plenary of Tax Chambers upheld a judgment on this point. The judgment held that the invoice amount could not simply be removed from costs without investigating whether the goods had been bought from someone else. This guide explains how the assessment is built, period by period, with a worked example and the calculation points for a tax court petition. It reflects the law in force on 27 October 2026.

Short answer: what the denial triggers

Denying the deduction means removing the VAT on invoices treated as fake or misleading from the deductible VAT in the return and recalculating the return table. The table summarises the consequences.

This guide concentrates on the content and calculation of the assessment. The letters that come before an assessment, the decision between correcting and defending, and the exposure of directors are covered in our guide on fake invoice allegations and KURGAN tax audits in Turkey.

The statutory conditions for deduction

Taxpayers may deduct from the VAT calculated on their taxable transactions, unless the law provides otherwise, the VAT shown on invoices issued for supplies of goods and services made to them in connection with their business (VAT Law Art. 29(1)(a)). The VAT General Implementation Communiqué explains the logic of the system: the tax a taxpayer deducts has already reached the tax office at an earlier stage (section III/C-1). The right to deduct therefore depends on a real supply and on the tax calculated for it.

A fake document records a transaction or situation that did not exist as if it had. A misleading document relates to a real transaction or situation but misstates its nature or amount (TPL Art. 359; VAT Communiqué IV/A2-3.1 and 4.1). With a fake document there is no supply that could give rise to the deducted tax, so the condition in Art. 29(1)(a) fails. With a misleading document, the scope of the denial is debated by reference to the untrue part, which is why the classification adopted in the examination report matters.

When the administration denies the deduction

The VAT Communiqué defines a fake document use report as a report establishing that VAT on fake documents was used by including it in deductions. For action to be taken on that basis, the deduction based on the document found to be fake must be denied; reports that deny deductions for other reasons without a fake document finding do not qualify (section IV/A2-3.4). A finding of fake document use also requires that the VAT on the document was actually deducted (section IV/A2-3.5).

The Communiqué also requires inspections, analysis of the flow of goods through physical or book inventories and yield studies, counter-examinations, transport and payment evidence, and findings on business relationships, shareholders and the accountant before a document is treated as fake for these purposes (IV/A2-3.1). These statements belong to the special VAT refund rules, but they show which findings the administration itself regards as necessary and can be relied on in a tax court action.

The seller paid the VAT: is the deduction protected?

A person who shows VAT on an invoice although there is no taxable transaction, or although it has no right to show VAT, must pay that VAT (VAT Law Art. 8(2)). The buyer’s right to deduct, however, depends on a supply made to the buyer (Art. 29(1)(a)). Read together, the fact that the seller declared and paid the VAT does not on its own give the buyer a right to deduct; it can be filed as evidence supporting the reality of the transaction.

The same amount can therefore be claimed both from the issuer under Art. 8(2) and from the buyer whose deduction is denied. A buyer that was misled may claim from the seller the VAT it paid, together with penalties and interest it was made to pay; this is discussed in our Turkish guide on recourse and damages claims against the seller (in Turkish).

Carried-forward VAT and the periods assessed

Where deductible VAT in a period exceeds VAT calculated on taxable transactions, the difference is carried forward to later periods (VAT Law Art. 29(2)). A tax loss means that tax was not accrued, or was accrued short, on time (TPL Art. 341). If a denied deduction does not make VAT payable in its own period but only reduces the carried-forward balance, no tax is short-accrued in that period. The inspector recalculates the return table for later periods. The reduced balance is used up sooner, and tax is assessed for the periods in which VAT becomes payable.

The file decided by the Third Chamber of the Council of State on 25 December 2025 (E.2023/586, K.2025/5928) shows the method. Deductions based on invoices treated as fake were denied and the VAT carried forward from December 2017 was reduced. VAT was then assessed for June and August 2020, the periods in which VAT became payable under the recalculated return table. In the same file a threefold penalty was imposed for the 2017 periods, while for the 2020 periods reached through carried-forward VAT the penalty was one times, increased under the repeat-offence rule.

In the example, output VAT in January is TRY 100,000 and deductible VAT TRY 300,000, of which TRY 200,000 relates to the denied invoice. In February, March and April, output VAT is TRY 150,000, 120,000 and 100,000 and deductible VAT TRY 50,000, 60,000 and 50,000. The TRY 200,000 denied in January becomes an assessment in February, March and April, when the carried-forward balance is exhausted. That distribution also determines, period by period, when interest starts and how the limitation period is counted.

The part of an assessment arising from carried-forward VAT depends on the assessment for the earlier period in which the balance was reduced. In its decision of 26 December 2025 (E.2023/6402, K.2025/5970), the Third Chamber reversed the regional court’s ruling on that part. It did so because the earlier-period assessment on which the carried-forward VAT depended had been reduced by a tax court. The link works both ways: if the earlier assessment is cancelled, the dependent part loses its basis; if the action against the earlier assessment fails, the dependent part follows that outcome. Each period’s case therefore needs to be followed, and the link between the files shown in the petitions.

One-times or threefold penalty

Where a tax loss is caused in the cases in Art. 341, a tax loss penalty of one times the tax lost is imposed; where it is caused by the acts in Art. 359, the penalty is three times, and one times for those who participate in such acts (TPL Art. 344). The rate therefore depends on whether the fake document was used knowingly. Causing an unjustified refund also counts as a tax loss (TPL Art. 341(2)).

The repeat-offence increase applies if a new penalty is imposed before the end of the calendar year in which the fifth year after the day following the earlier penalty becoming final falls; the dates on which the earlier penalties became final are what count (TPL Art. 339). If an earlier penalty had not yet become final, the condition is not met. The Council of State treats the part of the penalty attributable to the repeat-offence increase as a separate ruling (Third Chamber, 26 December 2025, E.2023/6402, K.2025/5970), so the finality date of the earlier penalty relied on should be checked. Whether the penalty is one times or three times is a question of intent, discussed in our Turkish guide on knowing and unknowing use (in Turkish).

Late-payment interest

For supplementary, ex officio or administrative assessments, late-payment interest applies to tax that becomes final without litigation from the normal due date for the period concerned until the accrual date of the last assessment, and to the unpaid part of tax that is litigated from the normal due date until service of the court decision. The rate is the late-payment surcharge rate set under Law No. 6183, and fractions of a month are disregarded (TPL Art. 112(3)). Presidential Decision 10556, published in the Official Gazette on 13 November 2025, set the monthly rate at 3.7%; it was previously 4.5% (Decision 8484, Official Gazette 21 May 2024) and 3.5% (Decision 7782, Official Gazette 14 November 2023).

Filing a case suspends collection of the disputed tax and penalties (Administrative Procedure Law Art. 27(4)), but interest continues to run, until service of the court decision, on any amount the company ultimately loses. Paying undisputed items, or items the company expects to lose, while the case continues is therefore an option for limiting interest.

Corporate tax: disallowance and the closest-to-true base

Invoices treated as fake affect corporate tax as well as VAT. Corporate income is determined under the business income rules of the Income Tax Law (Corporate Tax Law Art. 6(2)); general expenses incurred to obtain and maintain business income are deductible (Income Tax Law Art. 40(1)); and records of transactions with third parties must be supported by documents (TPL Art. 227(1)). If the inspector removes the invoice amount from costs, the difference is added to corporate income and taxed at 25% (Corporate Tax Law Art. 32(1); 30% for certain financial institutions). Evidence that the books or returns do not reflect the true position is a ground for ex officio assessment (TPL Art. 30(6)).

In its decision of 28 January 2026 (E.2024/128, K.2026/32), the Council of State’s Plenary of Tax Chambers upheld, by majority, a regional court judgment. That judgment had held that a corporate tax assessment based on removing the full invoice amounts from costs rested on an incomplete examination. According to the upheld judgment, the possibility that the goods and services on the invoices were obtained from other persons had to be considered. The inspector had to examine whether the business could have continued without those purchases, or at what cost, and determine the true or closest-to-true tax base. Earlier in the same case the Fourth Chamber (21 June 2023, E.2020/1444, K.2023/4375) had reversed on the ground that the base should be assessed by reference to sector profit margins researched through chambers of commerce or professional bodies. The issue is contested: different approaches exist within the Council of State, and the Plenary’s decision was by majority.

That decision concerns the corporate tax base. The same result does not follow automatically for VAT, because the deduction depends on tax calculated for a supply made by the issuer of the invoice (VAT Law Art. 29(1)(a)). Where the goods were obtained from someone other than the issuer, the fate of the VAT deduction is a separate and contested question.

Provisional tax

Corporate taxpayers pay quarterly provisional tax to be set off against the year’s corporate tax (Corporate Tax Law Art. 32(2)). Where an examination shows that provisional tax for past periods was under-declared by more than 10%, provisional tax is assessed on the under-declared part. Once the set-off period has passed, final provisional tax is cancelled, but the late-payment interest and penalty are still collected (Income Tax Law supplementary Art. 120).

In its decision of 25 December 2025 (E.2023/586, K.2025/5928), the Third Chamber upheld the rulings that cancelled provisional tax principal whose set-off period had passed while maintaining the tax loss penalty imposed on that provisional tax.

A worked example

Assume a joint stock company recorded an invoice of TRY 1,000,000 plus TRY 200,000 VAT that is held to be fake. VAT became payable in the period of recording, knowing use is alleged and a threefold penalty imposed, and the full invoice amount is disallowed for corporate tax. Interest is shown at a constant 3.7% per month over 24 months for simplicity; periods with different rates are calculated separately.

A TRY 1,000,000 invoice thus produces an exposure of TRY 1,800,000 before interest. Losses, losses carried forward, the domestic minimum corporate tax (Corporate Tax Law Art. 32/C), reduced rates, provisional tax periods and repeat-offence increases all change the result. Using the Art. 376 reduction means not litigating the assessment. How that choice interacts with effective repentance in the criminal case is explained in our Turkish guide on effective repentance in fake invoice cases (in Turkish).

Years covered by tax base increases

The tax base and tax increase schemes in Article 5 of Laws No. 7143 and No. 7440 generally protect the years covered from later examination and assessment. Under paragraph 3(e) of Article 5 of both laws, however, examinations in periods after the years covered may still look at VAT carried forward from those years. No assessment may be proposed for the years covered in such examinations.

In its decision of 24 December 2025 (E.2024/1070, K.2025/1137), the Plenary of Tax Chambers held that, for a taxpayer that had made a VAT increase for 2016 under Law No. 7143, an assessment could be made for 2017 because VAT carried forward from December 2016 was reduced following an examination of 2016. It reversed the contrary judgment. The decision was by majority. The dissent argued that the taxable event for such later assessments occurs in the covered year, that the rule against proposing assessments therefore covers them, and that a different reading would defeat the purpose of the scheme. Fake invoices recorded in a covered year can therefore still feed into VAT assessments for later years.

The effect of the issuer’s own case

An assessment against the buyer rests on the tax technical report about the issuer of the invoice. The outcome of the issuer’s own action against assessments based on that report can directly affect the buyer’s case. In its decision of 26 December 2025 (E.2023/6402, K.2025/5970), the Third Chamber reversed the part of a regional judgment that had cancelled the buyer’s assessment for invoices from one issuer. It took into account that a judgment dismissing the issuer’s action had been upheld by the Council of State. That action was against the corporate tax assessed on the issuer for issuing fake invoices in return for commission.

Courts carry out all examinations of their cases of their own motion and may require the parties and other bodies to send documents they consider necessary (Administrative Procedure Law Art. 20(1)). A request to obtain the issuer’s report, interview records and court file can be based on that provision.

Pay, sue or correct?

The route depends on the stage of the assessment and on whether the transaction was real. The table shows the legal consequences; the choice should be made with the criminal file in view.

The procedure for the tax court action and a full Turkish model petition are in our guide on tax court action against fake invoice assessments (in Turkish). Because an amended return for a genuine purchase can have adverse effects in both the tax and criminal files, that decision should follow the criteria in our guide on amended return or objection (in Turkish).

Calculation points for a tax court petition

The model below shows how calculation points can be set out alongside the main argument that the purchases were real. It is an English working draft for group review; the petition filed with the tax court must be in Turkish and adapted to the periods, amounts and examination report in the assessment notices.

Each point rests on a separate statutory provision. The requests for a one-times penalty and for recalculation are made in addition to, and without prejudice to, the main request. Whether the set-off period for provisional tax has passed and whether the assessment has become final should be checked on the file.

How Hukukçular Evi can help

In assessments based on denied VAT deductions, Hukukçular Evi Ankara reviews each period and each issuer separately and checks the carried-forward VAT chain and the recalculated return table. It identifies errors in the penalty rate, repeat-offence increases, interest and provisional tax. It also prepares the evidence for a closest-to-true corporate tax base. The options of tax court action, penalty reduction and waiver of appeal are assessed together with the criminal file, and linked periods are litigated together. We correspond in English with group legal and finance teams. The scope of the service is described on our fake invoice defence page (in Turkish), and the lawyer’s profile is on the author page. You can reach us on +90 554 648 37 15.

Frequently asked questions

What does denial of the VAT deduction mean?

The VAT on an invoice treated as fake or misleading is removed from deductible VAT and the return table is recalculated (VAT Law Arts. 29(1)(a), 34(1); VAT Communiqué IV/A2-3.4).

What are the conditions for deducting VAT?

The purchase must relate to the business, the VAT must have been calculated for a supply made to the taxpayer and shown separately, and the invoice must be recorded in the statutory books within the time limit (VAT Law Arts. 29(1)(a), 29(3), 34(1)).

We recorded the invoice but did not deduct its VAT. Can a use finding be made?

Under the Communiqué, a finding of fake document use requires that the VAT on the document was deducted (IV/A2-3.5). The corporate tax treatment of the expense is assessed separately.

Is a report on the seller enough to deny our deduction?

The Communiqué states that, without a finding or report on the document used, the buyer is not treated as a user merely because it bought from a person with an issuance report (IV/A2-3.5).

The seller paid the VAT. Is our deduction protected?

Not on its own. A person who shows VAT without a real transaction must pay it (VAT Law Art. 8(2)); the buyer’s deduction depends on a real supply (Art. 29(1)(a)). The seller’s payment can be used as evidence that the transaction was real.

Does a tax loss arise if we had VAT carried forward?

If the denied deduction only reduces the carried-forward balance, nothing is short-accrued in that period; the assessment and penalty arise in the period in which VAT becomes payable after the return table is recalculated (TPL Art. 341; VAT Law Art. 29(2)).

What happens to later periods if the earlier assessment is cancelled?

The later assessment arising from carried-forward VAT follows the outcome of the earlier period on which it depends (Council of State Third Chamber, 26 December 2025, E.2023/6402, K.2025/5970).

Why is the penalty sometimes one times and sometimes three times?

It is three times where the tax loss was caused by the acts in TPL Art. 359, that is, knowing use of a fake document, and one times otherwise (TPL Art. 344).

At what rate is late-payment interest charged?

At the late-payment surcharge rate set under Law No. 6183, disregarding fractions of a month (TPL Art. 112(3)). The rate has been 3.7% per month since 13 November 2025 (Presidential Decision 10556).

Is interest charged on penalties?

No. Interest under TPL Art. 112(3) applies to assessed tax, not to tax penalties.

How does a fake invoice affect corporate tax?

If the invoice amount is removed from costs, corporate income increases and corporate tax at 25% with a related penalty is assessed (Corporate Tax Law Arts. 6(2), 32(1)). The Plenary of Tax Chambers upheld a judgment requiring the closest-to-true base to be determined, taking into account that the goods may have been bought from others (28 January 2026, E.2024/128, K.2026/32).

Can provisional tax be claimed after the set-off period?

Final provisional tax is cancelled after the set-off period, but the late-payment interest and penalty are still collected (Income Tax Law supplementary Art. 120).

Can a fake invoice in a year covered by a tax base increase affect later years?

No assessment may be proposed for the covered year, but carried-forward VAT may be examined, and the Plenary of Tax Chambers held by majority that an assessment can be made for the following year (Law 7143, Art. 5(3)(e); 24 December 2025, E.2024/1070, K.2025/1137).

If we use the penalty reduction, can we still sue?

No. The reduction under TPL Art. 376 does not apply to a taxpayer who fails to pay on time or brings a lawsuit.

Can the assessment be settled?

Penalties imposed for tax losses caused by the acts in TPL Art. 359 are excluded from settlement (TPL Annex Arts. 1 and 11).

Related guides

• Fake Invoice Allegations and KURGAN Tax Audits in Turkey — the entry point to this series
• Legal Guide for Foreign Investors in Turkey (Türkiye) 2026
• Taxation of Foreign Institutional Investors in Turkey
• Company Liability for Managers and Employees in Turkey
• Company Formation in Turkey for Foreigners
• Tax Court Action Against Fake Invoice Assessments (in Turkish)
• Limitation Periods in Fake Invoice Cases (in Turkish)
• Tax Evasion Penalty and Effective Repentance Calculator (in Turkish)
• VAT Refund Suspended Because of Fake Documents (in Turkish)
• Fake Invoice and KURGAN Decision Tool (in Turkish)
• Personal Liability of Directors and Managers in Turkish Fake Invoice Cases